Amplifier help

You have to finish it first... See my amp

I don't know how to I'm new at this :-S

reverse the polarity of your power supply and connect the negative to ground.

Man put a resistor between the capacitor at the collector and ground. You are coupling ac to ground that is wrong.

There's a lot going on here. First, you want the (+) side of the 5V source to connect to the two resistors. Ground the (-) side. Next, the output is shorted to ground. Also, the input capacitor, the center of the voltage divider, and the base of the transistor all connect. Typically, common emmiter amplifiers need a high impedance load. We can use a resistor to represent this. If you don't know exactly what the impedance is of the object this amp is driving, I suggest just using a 1M resistor. Next, 1V is going to be way too much input for this amp. 20mV might be to much. The DC gain alone is over 6V/V. Even if this were biased perfectly (which it isn't), and you removed the bypass cap, you'd still be limited to a little over 300mV at the input. Again that's without the bypass cap. With it - as it is now - you're looking at 10-20mV for the input, or add a resistor so that the signal is in that range before it gets to the amplifier.

Thank you I'm just starting studying electronics this app is gonna help me alot :-)

You're getting closer. Change that resistor you just added from 1K to 1M. Next, connect the wire the goes from the input capacitor to base to the center of the voltage divider. Finally, change the input voltage to 10mV.

I just posted a circuit called "For Shaloina". Take a look at it for reference.

I can't find it :/

Hmm. I just checked, it's public.

Anyhow, you're getting there. I noticed you lowered the signal frequency. Because the output was clipping. The reason for that is because with the capacitors you're using, the low cutoff frequency for this amp is around 10kHz. Below that, the lower the frequency less signal gets amplified. Just for reference, if you want a low frequency cutoff of about 60Hz, go with 220uF capacitors. Either way, this amplifier has a lot of AC gain. 1V input is way too much. Really, if I were using this amp in it's active range (well above 10kHz), I wouldn't put much more than 10 or 20mV to it. Now, are you wanting to use this for audio amplification? Like a preamp? Is it amplifying the signal from a sensor? Basically, what do you plan to use this for? That's going to determine the impedances you need to achieve, what input level and frequencies to expect, and what output you should strive for.

I'm just trying to study the basics of an amplifier and how to make circuits

I get that. But when you're just randomly building "an amplifier" how do you know what you got right or wrong?

That's what I have to learn, The teacher showed me an amplifier in a software on comp but it's not working here :-/